1 . 已知椭圆
的右焦点为F,左、右顶点分别为A,B.点C在E上,
,
分别为直线AC,BC上的点.
(1)求
的值;
(2)设直线BP与E的另一个交点为D,求证:直线CD经过F.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0b4bbfa0ed04cd3c2454d99d64e29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328956b059de1319454c334dc8b173bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b51ba0e4a09b19c0f0e5587f688d592.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd462d7bc41204e057f954bf9db14e97.png)
(2)设直线BP与E的另一个交点为D,求证:直线CD经过F.
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2 . 已知焦点在x轴上的椭圆E经过点
,且焦距为
.
(1)求椭圆E的标准方程;
(2)直线
与椭圆E交于不同的两点A、B,线段AB的垂直平分线交y轴于点M,若
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆E的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d702e12c2bfb356e258eb6592dd2fb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5256753eb2db4af40d162ef0f710c313.png)
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3 . 已知
在椭圆
上,
为右焦点,
轴,
为椭圆上的四个动点,且
,
交于原点
.
(1)判断直线
与椭圆的位置关系;
(2设
,
满足
,判断
的值是否为定值,若是,请求出此定值,并求出四边形
面积的最大值,否则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a7a78a0cb55d2396f7213432a86b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b1da9046b4cb82135a4a1eaa528c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce22fb0af10919eb6c130ce6205c7d9.png)
(2设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2e832d70d8cb96464f778bf23a0506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2992389255a27bf631763317f62f3922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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4 . 已知
,
分别是椭圆
:
的左右焦点,点
是
关于直线
的对称点,且
轴,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12a3d65b81934e40e1300c3422e0881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5dc06fe67c281c3ad3d19d6d8c98a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-29更新
|
391次组卷
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2卷引用:2020届福建省福州第一中学高三下学期开学质检数学(文)试题